vult VS js_of_ocaml

Compare vult vs js_of_ocaml and see what are their differences.


Vult is a transcompiler well suited to write high-performance DSP code (by vult-dsp)


Compiler from OCaml to Javascript. (by ocsigen)
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vult js_of_ocaml
1 4
326 757
1.2% 2.6%
5.9 9.3
5 days ago 5 days ago
OCaml OCaml
GNU General Public License v3.0 or later GNU General Public License v3.0 or later
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of vult. We have used some of these posts to build our list of alternatives and similar projects.


Posts with mentions or reviews of js_of_ocaml. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-02-04.
  • Question about the Reason project in general
    3 projects | | 4 Feb 2022
    In reality, most folks that developed BuckleScript frontends with ReasonML switched to ReScript syntax and are happy with it. Some felt more friction because of their reliance on PPXes or FP-heavy libraries (like Relude) and those people tend to use the Melange fork of BuckleScript or they switched to js_of_ocaml.
  • Is there a statically typed functional programming language that doesn't take purity so seriously?
    7 projects | | 1 Jun 2021
    TL;DR: Reason is, and always has been, independent of ReScript (formerly BuckleScript) and is still actively maintained. If you want to use Reason or OCaml to make native code you can. If you want to compile JS from OCaml or Reason you also still can, but you'll want to use either js_of_ocaml or a BuckleScript fork named Melange that was made in response to the BuckleScript/ReScript people's shenanigans. And if you only care about JS-like syntax and JS output, you can use ReScript.
  • Why is Elm more popular than most of its similar alternatives?
    1 project | | 15 May 2021
    Personally, I just use OCaml and compile to JavaScript with Js_of_ocaml. Js_of_ocaml has been stable and actively maintained for a decade, and I don't have to worry if some superficial syntactic change that affects nothing but ASCII art is going to break my code.
  • query-json: A story of cross-compilation with Reason
    8 projects | | 12 Oct 2020
    The compilation to JavaScript is the sweet section of this blog post since we are using OCaml (under the hood while writing Reason), and it allows us to compile directly to JavaScript using js_of_ocaml.

What are some alternatives?

When comparing vult and js_of_ocaml you can also consider the following projects:

melange - A mixture of tooling combined to produce JavaScript from OCaml & Reason

reason - Simple, fast & type safe code that leverages the JavaScript & OCaml ecosystems

jsoo-react - js_of_ocaml bindings for ReactJS. Based on ReasonReact.

yojson - Low-level JSON parsing and pretty-printing library for OCaml

bs-emotion - BuckleScript bindings to Emotion

scriptum - Untyped/typed functional standard library for Javascript.

query-json - Faster, simpler and more portable implementation of `jq` in Reason

sedlex - An OCaml lexer generator for Unicode

ninja - a small build system with a focus on speed